Robert Kubica topped the timesheet for Alfa Romeo, while Red Bull and Racing Point showed good pace on harder tyre compounds. Here are all the statistics from the fourth day of testing at the Circuit de Barcelona-Catalunya.
Robert Kubica was the surprise name at the top of the timesheets as pre-season testing got back underway at Circuit de Barcelona-Catalunya. The morning session saw less running than on any day last week, with the Alfa Romeo test driver topping the board with a 1:16.942 on the C5 tyres. The morning was interrupted by two red flag periods within forty minutes of one another. First, Sebastian Vettel spun following a trip through the gravel. The red flags were brought out to clear away the mess that Vettel had made on the circuit. Less than half an hour after the green flag re-emerged, Nicholas Latifi came to a halt on track, with Williams citing an engine issue as the reason for the Canadian’s stoppage.
In the afternoon, the drivers completed plenty of laps on long runs, with few times challenging the top of the leaderboard. The exceptions were Max Verstappen, who lapped second fastest on the C3 compound, and Sergio Perez, who impressed by lapping only eight hundredths slower than Verstappen on the same tyre compound. The session came to a slightly premature end, with Verstappen and Daniil Kvyat both stopping on track at the same time. Romain Grosjean was the only driver who was in the car all day, with every team except Haas switching drivers over the lunch hour. As a result, the Frenchman was the only drier to record 100 laps today. Racing Point, Alfa Romeo, Red Bull and Ferrari all recorded their best 2020 lap times.
Best Lap Times
| Driver | Team | Time | Tyre | |
| 1 | Robert Kubica | Alfa Romeo | 1:16.942 | C5 |
| 2 | Max Verstappen | Red Bull | 1:17.347 | C3 |
| 3 | Sergio Perez | Racing Point | 1:17.428 | C3 |
| 4 | Daniil Kvyat | AlphaTauri | 1:17.456 | C2 |
| 5 | Pierre Gasly | AlphaTauri | 1:17.540 | C4 |
| 6 | Alex Albon | Red Bull | 1:17.550 | C2 |
| 7 | Lewis Hamilton | Mercedes | 1:17.562 | C2 |
| 8 | Lance Stroll | Racing Point | 1:17.787 | C3 |
| 9 | Valtteri Bottas | Mercedes | 1:18.100 | C3 |
| 10 | Sebastian Vettel | Ferrari | 1:18.113 | C3 |
| 11 | Daniel Ricciardo | Renault | 1:18.214 | C2 |
| 12 | Carlos Sainz | McLaren | 1:18.221 | C3 |
| 13 | Charles Leclerc | Ferrari | 1:18.244 | C3 |
| 14 | Nicholas Latifi | Williams | 1:18.300 | C4 |
| 15 | George Russell | Williams | 1:18.535 | C3 |
| 16 | Romain Grosjean | Haas | 1:18.670 | C3 |
| 17 | Lando Norris | McLaren | 1:18.826 | C2 |
| 18 | Kimi Raikkonen | Alfa Romeo | 1:19.515 | C3 |
| 19 | Esteban Ocon | Renault | 1:21.542 | C2 |
LAPS COMPLETE
DAY 4 DRIVER LAPS COMPLETE
DAY 4 TEAM LAPS COMPLETE
OVERALL DRIVER LAPS COMPLETE
OVERALL TEAM LAPS COMPLETE
2020 v 2019
| Best 2019 Time | Best 2020 Time | Difference | |
| Mercedes | 01:16.224 | 01:15.732 | -0.492 |
| Alfa Romeo | 01:17.239 | 01:16.942 | -0.297 |
| Racing Point | 01:17.556 | 01:17.338 | -0.218 |
| Williams | 01:18.130 | 01:18.168 | 0.038 |
| Red Bull | 01:17.091 | 01:17.347 | 0.256 |
| Renault | 01:16.843 | 01:17.102 | 0.259 |
| AlphaTauri | 01:16.882 | 01:17.427 | 0.545 |
| McLaren | 01:16.913 | 01:17.842 | 0.929 |
| Haas | 01:17.076 | 01:18.380 | 1.304 |
| Ferrari | 01:16.221 | 01:18.113 | 1.892 |
After graduating in 2015 with a First Class honours degree in English Language and Literature, Nicky Haldenby, a lifelong fan of Formula 1, founded the Lights Out F1 Blog in 2016. Now in its sixth season, the blog has become a firm fan-favourite, delving deep into the sport’s history books and lifting the cover on unusual F1 statistics. Nicky also writes at F1Destinations and GPDestinations. In 2017 and 2018, he wrote for Badger GP. Nicky is also the host of the F1 Rewind Podcast and can be heard as the resident stats man on the 2 Soft Compounds Podcast.